If your device is locked by any carrier, it can only be used with a specific carrier's network only. This restricts your ability to use an eSIM from another provider, such as Simfinity. Unless you can unlock your device.
You may contact your original carrier and request them to unlock your device. They may have certain requirements or fees associated with unlocking their devices.
You may consider using a third-party unlocking service. However, please exercise caution when using these services, as some may not be legitimate or could potentially cause harm to your device.